Haha, the original poster isn't the only one who made this logical error.
Don't think about using the seemingly useless "car-driven wind". All equipment operating in the air attempts to reduce wind resistance, but you want to “find another way”?
The energy needed for the wind turbine you want to install will ultimately come from the vehicle level. If you supply energy in a circle like this, you have made the logical fallacy of "perpetual motion."
If you don't understand the above concepts yet, you can think about it this way: If you have installed it and operate it normally, the wind resistance will not be much more big. But when you turn on the light, you will immediately feel that the generator has become heavier and the resistance has increased. This requires the level to provide additional power to drivener the wind. ------This is the performance of a regular fuel generator after the circuit breaker is closed.
This is indeed completely false. If you have studied relevant specializations, you will know where you are going wrong. If you haven't learned it, it will be difficult to explain it to you. But one thing you just have to remember is that no matter how you improve it, the electricity generated by the extra resistance of the car pushing the generator fan will never be greater than the extra electricity consumed. This is the law of conservation of energy. Even if you are a scientist, you cannot solve this problem.